Power Steering Pump: Inspection
- Check vanes and rotor for damage or wear: vanes should slide easily in rotor. If necessary, replace vanes and rotor. Check vane body for excessive wear. If necessary to replace vane body, vanes and rotor must also be replaced. Check running surfaces of housing cover. If worn, replace entire pump. Check surface of pressure plate and replace if worn.
Courtesy of MERCEDES-BENZ USA
- Check control valve. If worn, replace entire pump. Install shell halves on shaft and check end play. If end play exceeds specifications (see chart in this article), replace entire pump.
Courtesy of MERCEDES-BENZ USA